chown
=====

POSIX specification: http://www.opengroup.org/onlinepubs/9699919799/functions/chown.html

Gnulib module: chown

Portability problems fixed by Gnulib:

  * When passed an argument of -1, some implementations really set the owner user/group id of the file to this value, rather than leaving that id of the file alone.

  * When applied to a symbolic link, some implementations don't dereference the symlink, i.e. they behave like lchown.

Portability problems not fixed by Gnulib:

  * This function is missing on some platforms: mingw.